Touch panel

Abstract

A touch panel is provided, including a substrate, a touch sensing array, a first electrostatic protection circuit, a first insulating layer and a plurality of first connecting lines. The substrate has an active region and a peripheral region surrounding the active region. The touch sensing array is disposed on the substrate and located in the active region. The first electrostatic protection circuit is disposed on the substrate and located in the peripheral region. The first insulating layer is disposed on the substrate and located in the peripheral region, wherein the first insulating layer covers the first electrostatic protection circuit. The plurality of first connecting lines is disposed on the first insulating layer and coupled to the touch sensing array respectively.

What is claimed is: 
     
       1. A touch panel, comprising:
 a substrate, having an active region and a peripheral region surrounding the active region; 
 a touch sensing array, disposed on the substrate and located in the active region; 
 a first electrostatic protection circuit, disposed on the substrate and located in the peripheral region; 
 a first insulating layer, disposed on the substrate and located in the peripheral region, the first insulating layer covering the first electrostatic protection circuit; 
 a plurality of first connecting lines, disposed on the first insulating layer and coupled to the touch sensing array respectively; and 
 a second insulating layer, disposed between the first insulating layer and the substrate, the first electrostatic protection circuit being located between the first insulating layer and the second insulating layer. 
 
     
     
       2. The touch panel as claimed in  claim 1 , wherein the first electrostatic protection circuit surrounds at least one side edge of the substrate. 
     
     
       3. The touch panel as claimed in  claim 1 , wherein the first electrostatic protection circuit comprises a closed pattern surrounding all the side edges of the substrate. 
     
     
       4. The touch panel as claimed in  claim 1 , further comprising:
 a plurality of first pads, disposed on the first insulating layer and adjacent to one side of the substrate, the first pads being connected to the first connecting lines respectively; and 
 at least one second pad, disposed on the first insulating layer and adjacent to the side of the substrate, the at least one second pad being coupled downward to the first electrostatic protection circuit via a corresponding contact window in the first insulating layer. 
 
     
     
       5. The touch panel as claimed in  claim 1 , wherein the first insulating layer is a light-shielding layer. 
     
     
       6. The touch panel as claimed in  claim 1 , further comprising:
 a third insulating layer, covering the first insulating layer and the first connecting lines; and 
 a plurality of second connecting lines, disposed on the third insulating layer and coupled to the touch sensing array respectively. 
 
     
     
       7. The touch panel as claimed in  claim 1 , wherein the second insulating layer is a light-shielding layer. 
     
     
       8. The touch panel as claimed in  claim 1 , further comprising a second electrostatic protection circuit, disposed on the first insulating layer. 
     
     
       9. The touch panel as claimed in  claim 8 , wherein the second electrostatic protection circuit and the first connecting lines have the same material. 
     
     
       10. The touch panel as claimed in  claim 8 , further comprising a plurality of second connecting lines, disposed between the first insulating layer and the substrate, wherein the first electrostatic protection circuit and the second connecting lines have the same material. 
     
     
       11. The touch panel as claimed in  claim 8 , wherein a material of the second electrostatic protection circuit is metal or transparent conductive material. 
     
     
       12. The touch panel as claimed in  claim 8 , wherein an orthographic projection of the first electrostatic protection circuit on the substrate at least partially overlaps with an orthographic projection of the second electrostatic protection circuit on the substrate. 
     
     
       13. The touch panel as claimed in  claim 8 , further comprising a contact window, located in the first insulating layer and coupled to the first electrostatic protection circuit and the second electrostatic protection circuit. 
     
     
       14. The touch panel as claimed in  claim 1 , wherein a material of the first electrostatic protection circuit is metal or transparent conductive material. 
     
     
       15. A touch panel, comprising:
 a substrate, having an active region and a peripheral region surrounding the active region; 
 a touch sensing array, disposed on the substrate and located in the active region; 
 a light-shielding layer, disposed on the substrate and located in the peripheral region; 
 a first electrostatic protection circuit, embedded in the light-shielding layer, wherein the light-shielding layer is located on both of an upper side and a lower side of the first electrostatic protection circuit; and 
 a plurality of first connecting lines, disposed on the light-shielding layer and coupled to the touch sensing array respectively. 
 
     
     
       16. The touch panel as claimed in  claim 15 , further comprising:
 an insulating layer, covering the light-shielding layer and the first connecting lines; and 
 a plurality of second connecting lines, disposed on the insulating layer and coupled to the touch sensing array respectively. 
 
     
     
       17. A touch panel, comprising: a substrate, having an active region and a peripheral region surrounding the active region; a touch sensing array, disposed on the substrate and located in the active region; a first electrostatic protection circuit, disposed on the substrate and located in the peripheral region; an insulating layer, disposed on the substrate and located in the peripheral region, wherein, the first electrostatic protection circuit is embedded in the insulating layer, and the insulating layer is located on both of an upper side and a lower side of the first electrostatic protection circuit; a second electrostatic protection circuit, disposed on the insulating layer; and a plurality of connecting lines, disposed in the peripheral region and coupled to the touch sensing array respectively. 
     
     
       18. The touch panel as claimed in  claim 17 , wherein an orthographic projection of the first electrostatic protection circuit on the substrate at least partially overlaps with an orthographic projection of the second electrostatic protection circuit on the substrate. 
     
     
       19. The touch panel as claimed in  claim 17 , further comprising a contact window, located in the insulating layer and coupled to the first electrostatic protection circuit and the second electrostatic protection circuit.